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(No Model.)

E. SGHREYER.

AGGORDION.

No. 291,782. 4Pamned Jem. 8, 1884.

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GERA, GERMANY.

ACCORDlON.

SPECIFICATION forming part of Letters Patent No. 291,782., dated January8, 1884. Application filed November-261853, (No model.) Patented inGcrmanyhlareh 10. lSSfi,Xo.10,fi60.

To @ZZ 207mm, it may concern:

Beit known that I, ERNsr SCMREYER, of Hamburg, Germany, have inventedcertain new and useful Improvements in Accordions, (which have beenpatented by the Government of Germany by Letters Patent Xo. 10,660,dated March 10, 1883,)of which the following is a specification.

Accordions were heretofore locked by means of exterior hooks, arrangedat opposite sides of the instrument, which hooks were pivoted to one endof the instrument and applied to fixed pins at the other end. Theselockinghooks frequently get loose or broken and become perfectlyuseless, imparting, furthermore, an unsightly appearance to theinstrument.

The object of this invention is to provide an accordion with an improvedlocking device, that is arranged at the interior of the inst-rument andapplied to or released from the ends of the instrument outside of thesame; and the invent-ion consists of an accordion which is provided atits interior with alocking-hook, that is fulcrumed to a fixed transverserod of the bottom case, and connected with a push or pull button passingthrough the wall of the bottom ease, so that the locking-hook isreleased from a fixed transverse rod of the top case,or applied thereto,according as the accordion is to be opened or closed after use.

In the accompanying drawings, Figure l repsents a vertical longitudinalsection, and Fig. 2 avertical transverse sect-ion, of an accordionfurnished with my improved locking device.

Similar letters of reference indicate corresponding parts.

In the drawings, A represents the bottom, and B the top case or end, ofthe accordion 5 G, the bellows, D, the strapped handle of the bottomcase, and D the strapped handle of the top case. The locking device isarranged at the interior of the accordion, and consists of a hook whichis fulcrumed to a fixed rod, w, that extends transversely from one endwall of the bottom case to the other end wall of the same, and of asecond fixed rod, lz, that extends transversely from one end wall to theothenof` the top case. If the top and bottom Gases and the bellows ofthe instrument are sufficiently pressed together, the hook R- err gagesthe fixed rod 71., and holds thereby the parts of the instrumentsecurely together. At its pivoted end the hook R is provided with a bentarm or eye, r, which passes through an eye at the inner end of the shankp of a pushbutton, o, whichlatter passes through an opening in thehandle D of the bottom case, A. The shank p is guided in a hole of thewall of' the bottom case, and provided with a collar, i, againstwhichpresses the free end of ahandspring, j", which is attached at itsopposite end to the inner side of the wall of the bottom case. Thespring f serves to keep the push-button o in position until depressed,and retains the locking-hook in position on the fixed transverse rod 7i.

In order to open the instrument, the accordion is taken hold of atthehandles D D' and pressed together, so as to facilitate the diseir gagingof the lockinghook R from the rod h. Simultaneously the push-button 0 isdepressed and the hook R swung back away from the rod h, as shown indotted lines in Fig. l. The bellows can now be expanded, and theinstrument is ready for use. By the expansion ol' the bellows the endsof the instrument are far enough apart so that the locking-hook cannotengage the wire 71. To accomplish this it is necessary to compress thebellows by the top and bottom cases sufficiently, so that thelocking-hook R can engage the rod 71, while the push-button issimultaneously depressed for a moment, so as to move the hook sidewiseout of thewayof the rod 7L and facilitate thereby the locking operation.In the locked position of the instrument the bellows are com, pressed,and exert thereby a pressure on the locking device, so that theinstrument cannot be opened,even by an accidental depression of thepush-button.

In place ofthe spring-pressed push-button, the locking-hook R may beoperated by a draw-rod, Z, which is connected directly to the shank ofthe hook R, passed through a hole in the side wall of the bottom case,A, and provided at the outer end with a button, K. To operate thisarrangement the button K is simply pulled after the bellows iscompressed, and thereby the locking-hook released from or applied to therod 71.

Having` thus described my invention, I claim as new and desire to securebyLetters Patent- 1. In an accordion, the combination of the ends andintermediate bellows with an interior locking device adapted to connectthe ends7 and means whereby the locking device is applied to or releasedfrom the ends from the outside of the instrument, substantially as setforth.

2. The combination of a bottom case having a fixed transverse rod, anintermediate bellows, a top case having a fixed transverse rod7 aorte-2a locking-hook applied to the transverse rod of the bottom case, andmeans whereby the locking-hook can be applied to or released i5 from therod of the top case from the outside of the instrument, substantially asspecified.

In testimony that I claim the foregoing as my invention I have signed myname in presence of two subscribing witnesses.

ERNST SCHREYER. Vitiiesses:

CHARLEs R. Hovr, H. SCHRADER.

